Earlier this season, I did a marathon on my skierg, to complete my sweep of my age group wr. Last hour was hell - my feet got so sore, cramping up, I was trying to shift weight from one side to the other, took off my shoes, could not find relief no matter what I tried, had to stop every 5 minutes or so. Never again ! (at least until I move into the next age group )

No problem hydrating or snacking. Skierg with one arm while drinking, changing TV channels, etc. Found the skierg marathon a little easier, at least on the bum, than rowing. Bikerg looks solid, pre-ordered one this morning but won't get it for awhile...